Fender Pro Jr.
Mercury Magnetics transformers are the highest quality transformer upgrades for the Pro Jr. (USA, MIM and III versions) and they work exceptionally well to put the final touches on an amp with our modification kits. The tone is open, clear and articulate. It sounds like taking a heavy blanket off of your amp.
If you're unsure of which transformer to upgrade we suggest upgrading the output transformer. The output transformer is the most closely related to the tone of the amplifier. Upgrading the entire set will significantly improve the performance of the circuit as well as tone.
Please contact us with any questions about upgrading your transformers and if you have an amp that you don't see represented here we can help find the right transformer for you!
Transformer product photos are for reference only and the actual transformer may look different.
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